Stopping mechanism for textile machinery



E. F. HATHAWAYi. STOPPING MECHANISM FOR TEXTI LE MAGH|NERY..

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2 SHEETS-SHEET 2- lave tor.- Edgawl'yiaikaway,

EDGAR' F. I-IATHAWAY,-OF DORCHESTER, MASSACHUSETTS, ASSIGNOR TO MOHA WKCARPET MILLS, INQ, OF AMSTERDAM, NEW YORK, A CORPORATION OF NEW "YORK.

STOPPING MECHANISM FOR TEXTILE MACIFINERY.

Specification of Letters Patent.

Patented June '13, 1922;

Application filed- March 5, 1921. SeriaI No. 449,889.

To all whom it may cancer n.

Be it known that I, EDGAR F. HATHAWAY, a citizen of theUnited States,and a resident of Dorchester, in the county of Suffolk and State ofMassachusetts, have invented an Improvement in Stopping Mechanism forTextile Machinery, of which the following description, in connectionwith the accompanying drawings, is a specification, like characters onthe drawings, representing like parts.

This invention relates to stopping mechanism for textile machinery andparticularly to weft stopping mechanism, and more particularly to weftstopping mechanism for chenille forming mechanism wherein separate weftlengths are laid in the shed as disclosed in my application Serial No.449,887,

In order that the principle of the invention may be readily understood,I havedisclosed a single embodiment thereof in the accompanyingdrawings, wherein Fig. 1 is a view partially in side elevation andpartially in vertical section of a stop motion embodying my invention;

Fig. 2 is a detail representing the lower part of the mechanism shown inFig. 1 but with a different position of parts;

Fig. 3 is a view in side elevation of the upper'part of themechanismshown in Fig. 1 and indicating also the weft. presenting device and theweft carrier or weft laying device;

Fig. 4: is a detail in side elevation of the upper part of the mechanismshown in Fig. 1 andlindicating, upon an enlarged scale, in full and indotted lines, two positions of the parts; 7 I

Fig. 1 is a detail in elevation of a part of the construction shown inFig. 4;

Fig. 5 represents-the clutch shaft and con nections thereto forpositioning the parts for high speed, for low speed and for neutralposition; and

Fig.6 is a view in side elevation and vertical section representing thebrake means preferably employed.

In my co-pending applications Serial Nos. 149,88? and 449,888, I havedisclosed means for forming chenille and including means for presentingthe weft thread or threads selectively to be grasped by a suitable weftcarrier. Herein I have indicated at 1 in Fig. 3 one of the weft tubes orfingers by .passes.

which yarn is selectively presented to be grasped by the jaws 2' of theweft carrier 3. Preferably also and as shown in certain of saidapplications weft severing means are employed to sever the weft as laidat each nism in case the .weft thread fails of presentation or otherlike weft fault. I have indicated diagrammatically the warps forming theshed at 41-, 5 in Fig. 1 and take-up rolls 6, 7, over which the wovenfabric 8 The weft itself is indicated at 9 in Figs. 1 and 3. At asuitable point between the end 10 of the weft presenting finger 1 andthe weft seizing position of the weft carrier 8, I provide a feelerl'lpreferably formed as a finger upstanding from-a rock shaft 12 whichis mounted in guidesin uprights 13, 13 upon the top of the lay.14@, all'as'indi'cated in Fig. 3. v I

Fast upon the rock shaft 12 is a second finger 15 and also fast thereonis a depending lever arm 16 having a hook 17 at its lower end.described, the rock shaft12 is caused to rock so that the finger 11feels for the weft 9. If the latter be present the finger 11 islimitedin its movement thereby, but if the In a manner to be hereinafterweft'be absent, then the finger limoves into the dotted line positionshown in Fig. 4, thereby causing the finger 15 and the'lever arnr16tomove'into their dotted line positions, also shown in Fig; 4, andthereby to stop the operation of the mechanism in a manner which will behereinafter described.

Upon a suitable shaft 18 is fast a cam 19 having a projection 20, saidcam rotating once to each beat-up of the lay. Bearing upon the peripheryof the cam 19 is arroll 21 carried by the arm- 22 of a lever pivoted at23, the opposite arm 2 1 of said lever havingpivoted at its outer end at25 a bell crank lever provided with arms 26, 27. Tapped into the freeend of the arm' 26 is a threaded bolt or screw 28, the lower end ofwhich is adapted to take against a stop or projection 29 upon the faceof the lever arm 24. A coil spring 30 is attached at one end to thelever arm 26 and at its'other end to'the lever arm 24, so as yielding'lyto hold the lower end of the bolt or screw 28 against the stop 29. Thelever arm 26is provided upper end has a laterally extending head 34adapted to be engaged by the finger 15 in the swinging movement of thelatter and to be depressed if the finger 15 moves into its dotted lineposition indicated in Fig. 4. At its lower end the rod 33 has securedthereto a transversely extending foot or member 35 provided with alaterally extending projection 36 indicated most clearly in Fig. 4*.

When the lever arm 16 with its. book 17 is moved as described in thedotted line po- 'sition shown in Fig. 4, it intercepts or comes into thepath of downward movement of the projection 36 of the member 35. Themember 35 fast upon the upright rod 31 and the engagement oftheprojection 36 thereon with the book 17 prevents the full downward normalmovement of the rod 31 due to the action of the cam 19, 20. I

In'the normal operation'of the parts the rod 31 is constantlyreciprocated vertically from the cam 19, 20, and the small bell cranklever 26, 27 has no rocking movement or movement relative to theswinging movement of the lever 22, 24. In such normal operation of theparts, the arm 27 of the I 24, the coiled spring 37, which encircles thelower end of the rod 31 between the lever arm 26 and the fixed collar38, is compressed and offers sui'licient resistance to prevent thenormal swinging of the bell crank 26, 27. The result is that the lowerend 39 of the lever'arm 27 engages the shoulder 40 of the lever arm 41of a lever pivoted at 42. The opposite arm 43 of said lever is providedwith a projection 44 furnishing a shoulder 45. The lever 41, 43 isnormally held in the position shown in Fig. 1 by a coiled spring 46connected at one end at 47 to the lever arm 41 and at its other end at48 to a projection upon the large bell crank lever 22,

In a suitable bracket 49 shown most clearly in Fig. 5, there is mounteda rock shaft 50 having at one end a bevel pinion 51 meshing with asimilar pinion 52 upon the clutch shaft 53 hereinafter more fullyreferred to. Loose upon said shaft 50 and as best shown in Fig. 1 is alever arm 54 which at its upper endhas T or hammer head providingshoulders 55, 56. The lever arm '54 is provided with. a laterallyextending porthe concentric edge 67 of the rib 63 and the shoulder 65,for apurpose hereinafter more fully stated.

Pivot'ally connectedat 68 to the lever arm 54 is a rod 69 which isguided'for sliding movement in a fixed post or part 70 upon a suitablepart of the framing. The said rod 69 has fast thereon two collars 71, 72be tween which and the said. post 70 are pro vided two coil springs 73,74. 'Tension of the said two springs is equalized when the mechanism isin neutral position, that is, when the mechanism is stopped upon thebreaking of a thread and as indicated in Fig. 2. When, however, themechanism is running at high speed which is the position of the partsindicated in Fig.1, the spring 73 is under the greater compression andtends to move the rod 69 to the right viewing Fig. 1.

Assuming the absence of the weftf9 at the proper time, it will beevident that the finger 11 will descend into the dotted line positionindicated in Fig. 4, and thereupon the downward movement of the rod31will be stopped. Consequently the lever arm 27 will engage theshoulder 40 of the lever arm 41 and will rock said lever 41, 43 so thatthe lateral projection 66 rides upon the shoulder 64 onto the concentricface 67 of the rib 63. This will withdraw the notch 45 of the lever arm43 from the shoulder 55 of the lever arm :54 and consequently the latteris free to be moved in a clockwise direction, viewing Fig. 1, under thestress of the spring 74. Such movement of the lever arm 54 causes likemovement of the segment-like member 61 through engagement of the rib 59with the edge of the lever arm 60, there being as indicated a certainamount of lost motion or play for a purpose hereinafter set forth. Themovement of the segment-like member 61 which, as stated, is fast uponthe shaft 50, causes rocking movement of the latter,-and consequentlyrocking movement of the clutch shaft 53. Fast upon said shaft 53 areyokes 75, 76 which engage the groove 77 in the clutch member 78, thusthrowing the parts into the neutral position indicated in Fig. 2.

Upon the main drive shaft 79 which carries the clutch member 78 areprovided two gears 80, 81 which when fast thereon respectively drive themechanism at low speed and at high speed. Consequently the position' ofthe clutch shaft 53 determines whether the machine shall operate at lowspeed or at high speed or shall stand still.

When the parts of the mechanism are operating at high speed, theshoulder 55. of the lever 54 is in engagement with the shoulder 45 ofthe lever arm 43, as indicated in Fig. 1, and the spring 74 is undercompression, the. spring 73 at such time being substantially neitherunder expansion nor compression. When the machine is operated at lowspeed, the shoulder 82 at the opposite face of the projection 44 ofthelever arm 43 comes into contact with the shoulder 56 of the lever 54and at the same time the spring, 7 3 is under compression and the spring74 is free from compression. hen

the parts are in the neutral or stopped position, indicated in Fig.- 2,both springs 73', 74 are substantially free from compression andequalize each other, as previously stated.

I. provide means whereby the mechanism may manually be brought into anyone of the three positions described. In other words, there is capacityfor stopping the machine, either automatically or manually, and forbringing the mechanism manually into either high speed or low speed.Moreover there is capacity to stopthe machine whether it be running athigh speed or low speed provided there is failure'or' fault of the weft.

In order to perform said manual operations, I have herein for thepurpose pr0- vided' a lever 83 pivoted at 84 upon the framing and havinga handle 85 for manual operation. To a projection 86 of said lever armthere is pivoted at 87 a link- 88' which at its opposite end is pivotedat 89 to the arm 60 of the segment-like member 61. lVhen said lever83-occupies the full line position shown, the mechanism is runningathigh speed. lVhen it is desired to stop the mechanism manually, thelever 88 is moved in a clockwise direction into the dotted line positionindicated in Fig.1, this being an intermediate position, and it isobvious that the pull through said lever 83 upon the segmentike lever 61causes the projection 66 of the lever arm 41 to ride up the inclinedshoulder 64, thereby releasing the projection 44 from the head of thelever 54. This action is permitted because of the. fact that the ribs58, 59 are spaced apart a greater distance than the width of the leverarm 60, thus permitting initial movement of the segmentlike lever 61before movement of the lever arm 54 is possible. The riding of the projoction 66 up the inclined surface 64 and onto the concentric face 67 ofthe rib 63 causes the swinging of the lever arm 43 in a contraclockwisedirection, thus releasing the lever 54 and permitting. said lever to bebrought into the neutral'position indicated in Fig. 2. In order to bringthe parts into the low speed position, the lever arm 83 is swung stillfurther in a clockwise direction to the second position indicated indotted lines, and thereupon the shoulder 56' of the lever 54 is broughtinto engagement with the shoulder 82 at the right hand side of. theprojection 44 of the lever arm 43.

Preferably I provide means to apply a brake to the drive shaft 79 whenthe" mechanism is brought into neutral position. For this purpose and asshown most clearly in Figs. 5 and 6, I have keyed upon the shaft 79adrum or disk 90 to which is adapted to be applied a brake shoe 91pivoted at 92 upon a lever arm'93 itselfpi-voted at 94 upon the framing.Integral with the lever arm 93 is a lever arm 95 having a split portionto receive an adjusting screw 96, ascrew 97 being provided to tightenthe split portion with respect to said screw. The lower end ofthe screw96 may take against a: lateral projection 98 on a lever arm 99, itselfalso fast with the lever arms, 93, 95. The lever arm 99 is normallypressed in a clockwise direction by a pin or pushrod 100, the inner endof which takes into a socket 101 in the lever 93, there being anelongated coil spring 102 about said pin or push rod and confinedbetween a collar 103 fast on said rodor pin and the bearing upon theframing, not shown, for said pin. 7

Upon the shaft 50 for operating, the clutch lever is fast a cam lever104 having therein a notch 105 into which a roll 106' uponthe lever arm99 is adapted to take. When the cam lever 104' is in the position shownin Fig. 6, the clutch is in its neutral position, and the spring 102 ispermitted because of thereception of the pin 106 in the notch105 toforce the rod. or pin to the left, viewing Fig. 6, and thereby to forcethe brake 91 against the disk or drum'90. lVhen the mechanism is runningat high speed, the roll 106 is out of the notch and bears against thecam lever 104 at substantially the point 107. When the mechanism isrunning at low speed, the said roll 106 bears uponthe surface of thesaid cam lever 104 at substantially the point 108.

It will be understood from the foregoing that in the event of weft faultor failure,-the

mechanism, whether running at low speed Having thus described oneillustrative embodiment of my invention, I desire it to be understoodthat although specific terms are employed, they are used in a genericand descriptive sense and not for purposes of lim- 'ltatlon, the scopeof the invention being set members adapted to be actuated by said clutchwhen in its high speed position or low speed position. respectively, soas to drive the mechanism at sa1d respective speeds, means to supplyyarn or thread, a

detector for said yarn or thread, and means caused to. function by saiddetector throughpredetermined defective condition of the yarn or thread,thereby to move the clutch into said neutral position.

2. Textile mechanism comprising in combination, a shaft having a highspeed gear and a low speed gear thereon, and a clutch adaptedeffectively to drive either of said gears or to be moved to a neutralposition, means to supply yarn or thread, a detector for said yarn orthread, and means caused to function by said detector throughpredetermined defective condition of the yarn or thread, thereby to movethe clutch into said neutral position. I

3. Textile mechanism comprising in combination, -ears to drive themechanism at high speed and at low speed respectively, a clutch adaptedto render either of said gears effective or to be moved to a neutralposition, manual means to move said clutch into any one of said threepositions, means to supply yarn or thread, a detector for said yarn orthread, and means caused to function by said detector throughpredetermined defective condition of the yarn or thread, thereby to movethe clutch into said neutral position.

1. Textile mechanism comprising in combination, gears to drive'themechanism at high speed and at low speed respectively, a lever 83 havingthree positions, a clutch, connections from said lever to said clutch tomove the clutch into effective driving relation with said high speedgear or said low speed gear or into a neutral position, means to supplyyarn or thread, a detector for saidyarn or thread, and means. caused tofunction by said detector through predetermined defective condition ofsaid yarn or thread to move the clutch from either high speed or lowspeed position into neutral. position.

5 Textile mechanism comprising in combination, gears to drive themechanism at high speed and at low speed respectively, a clutch adaptedto, be moved to cause the functioning ofeither the high speed gear orthe low speed gear or to be moved into an intermediate neutral position,means to supply yarn or thread, a detector for said yarn or thread, andmeans caused to iunction'by said detector through predetermined defective condition of said yarn or thread to move the clutch from eitherhigh speed or low speed position into neutral position,

6. Stop mechanism comprising in combination, a'member mounted for to andfro movement, means moved by movement of said member to-stop themechanism of which said member is a part, a second member cooperatingwith the first member and having a'iormation adapted to be engaged byeither one of two formations upon the first member, and whereby therunning of the meche anism at two diiferent speeds is controlled, andmeans governed by predetermined; defectivecondition in the materialacted on by the mechanism to move said second mentioned member so-as topermit the first mentioned member to occupy an intermediate position outof contactwith the said formations, whereby the mechanism is stopped.

7. Textile mechanism having means either to drive the same at high speedor at low speed, means to supply a thread or yarn, and means to stop themachine upon predetermined defective condition of said yarn or threadfrom either highspeed or low speed, said means including a membermounted for to and fro movement, means adapted to be moved thereby toeffect the driving of the mechanism at high speed or low speed or tostop the same, a second member having a formation to engage spacedportions of the first member, and means controlled by the yarn or threadto move said formation upon the second member out of engagement with thefirst member for the purpose set forth.

8. Textile mechanism having means either to drive the same at high speedor at low speed, means to supply a thread or yarn, and means to stop themachine upon predeterminedldefective condition of said yarn or threadfrom either high speed or low speed, said means including a membermounted for rocking movement, means moved by said member to effectdriving of the machine at high speed or low speed or stop the same, asecond member having a formation to engage spaced portions of the'firstmember,

determine the running of the machine at high speed or low speed, or thestoppage thereof, a second member 43 having a formation 44, a leeler forthe yarn or thread, and intermediate connections between said teeler andsaid second member 43.

10. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined detective condition of said yarn orthread from either high speed or low speed, said means including amember 54 mounted for rocking movement, a member 63 moved by movement ofthe member 54, a pivoted member 41, 43 having a formation 44 to beengaged by spaced portions of the member 54, a feeler for the yarn orthread, and a connection including the member 31 between said 'feelerand said member 43.

1'1. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn,

and means to stop the machine upon predetermined defective condition ofsald yarn or thread from either high speed or 'low speed,

said means including a member 54 mounted for rocking movement, meansoperatively connected with said member and adapted to be moved therebyto control the high speed or the low speed or the stopping position ofthe mechanism, a member 43 having a formation to engage spaced portionsof the member 54, a feeler for the yarn or thread, reciprocatory meansto move said feeler, and means moved by said reciprocatory movement tochange the position of said member 43.

12. Textile mechanism having means either to drive the sam at high speedor at low speed, means to supply a thread or yarn, and means to stop themachine upon predetermined defective condition of said yarn or threadfrom either high speed or low speed, said means including a member 54adapted to determine whether the machine shall run at high speed or atlow speed or be stationary, a movable member 43 having a formation toengage spaced portions of the member 54, a feeler, a rod 31 to move thesame, means tending normally to reciprocate the rod 31, and means causedto move by an 1nterruption in the movement of the member 31 to change thposition of the member 43 with respect to the member 54.

13. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined defective condition of said yarn orthread from either high speed or low speed, said means including amember 54 to place the mechanism in either high speed or in low speed orin stopping position, a member 43 having a formation to engage spacedportions of the member 54, means governed by the presence or absence ofyarn or thread to govern the relation of the member 43 with respect tothe member 54 and manual means to shift said member 54.

14. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined defective condition of said yarn orthread from either high speed or low speed, said means including amember 54 to determine the position of the mechanism for high speed, forlow speed or for stopping, a lever 53 having a formation to engagespaced portions of the member 54, a feeler for the thread or yarn,operative connections between said feeler and a lever 53 to control theposition of the latter.

15. Textile mechanism having means either to drive the same at highspeed 9r at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined defective condition of said yarn orthread from either high speed or low speed, said means including amember 54 to determine the position of the mechanism for high speed, forlow speed or for stopping, a lever 53 having a formation to engagespaced portions of the member 54, a feeler for the thread or yarn,operative connections between said feeler and a lever 53 to control theposition of the latter, and manual means operatively connected to themember 54 to move it into position for high speed, for low speed or forstopping the mechanism.

16. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined defective condition of said yarn orthread from either high speed or low speed, said means including amember 54, means movable thereby to determine the high speed, low speedor stopping position of the mecl1- anism, a lever 43 having a formationto engage spaced portions of the member 54, a feeler for the yarn orthread, a member to reciprocate said feeler but adapted to be held fromreciprocation upon the absence of yarn or thread, and lever meansadapted to be moved by interruption of the reciprocating movement ofsaid reciprocatory member to change the position of the lever 53 withrespect to the member 54.

17. Textile mechanism having means either to drive the same at highspeed or at low speed, means to supply a thread or yarn, and means tostop the machine upon predetermined defective condition of said yarn orthread from either high speed or low speed, said means including afeeler for the yarn or thread, a rod 31 to move the feeler, meanstending normally to reciprocate the rod 31 and including a lever 22, 24,lever means carried by the lever 22, 24, and adapted to be shifted inposition upon interruption of movement of the rod 31, a lever 41, 43gover-ned in position by the said lever means, and a member 5% adaptedto engage the lever 41, 43, and means adapted to be moved by saidmember-54 to change the direction of the mechanism.

. 18. Textile mechanism comprising in combination gears respectively todrive the mechanism at high speed and at low speed, a clutch, means tomove the same into effective driving relation to the high speed gear orto the low speed gear or into a neutral position, a brake, connectionsto apply the brake When the clutch is in neutral position, means tosupply yarn or thread, a detector for said yarn or thread, and meanscaused to function by said detector through predetermined defectivecondition of said yarn or thread to move the .clutch from either highspeed or low speed position into neutral position.

19. Textile mechanism comprising in combination, means to drive themechanism at high speed andat low speed respectively, a clutch adaptedto cause the functioning of either the high speed gear or the low speedgear or to be moved into a neutral position, a brake, means forautomatically applying the brake when the clutch is in neutral position,means to supply yarn or thread, a detector for said yarn or thread, andmeans caused to function by said detector throu h predetermineddefective condition of sald yarn or thread to move the clutch fromeither high speed or low speed position into 7 neutral position.

20. Textile mechanism comprising in combination, gears to drive themechanism at high speed and at low speed respectively, a shaft havingtwo positions, means to move said shaft into one of said positions tocause the high speed gear to function and to move it into the otherposition to cause the low speed gear to function, means to supply yarnor thread, a detector for said yarn or thread, and means caused tofunction by said detector through predetermined defective condition ofthe yarn or thread Whether the high speed gear or the low speed gear befunctioning.

21. Textile mechanism comprising in combination, gears to drive themechanism at high speed and at low speed respectively, a member havingthree positions, means to move said member into one position to causethe high speed gear to function, into another position to cause the lowspeed gear to func-V tion, and to a third position to cause the textilemechanism to come to rest, means to supply yarn or thread, a detectorfor said yarn or thread, and means caused to function by said detectorthrough predetermined defective condition of said yarn or thread to stopthe mechanism Whether the high speed gear or the low speed gearbe-functioning.

In testimony whereof, I have'signed my name to this specification.

EDGAR r. I-IATHAWAY. 7

